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Proceedings Paper

Effects of illumination on the electrical properties of oxygen-deficient cuprates and manganites
Author(s): Alain Gilabert; R. Cauro; Jean-Pierre Contour; M. G. Medici; J. C. Grenet; R. Papiernik; Ivan K. Schuller
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Paper Abstract

We report the analogies between the electrical properties at low temperatures of oxygen deficient cuprates and manganites thin films under illumination by UV or visible light. For the cuprates, a decrease of the oxygen content decreases the critical temperature of the transition from the normal to the superconducting state while for the manganites it decreases the transition temperature at which the insulator-metal transition occurs. For full oxygenated cuprates and manganites thin films there is no effect of the illumination on the electrical properties of the films. For small oxygen deficient cuprates (in the normal state) and manganites thin films, light increases substantially the conductivity leading to a persistent photoinduced conductivity (PPC) and the effect of persistent photoconductivity increases with oxygen deficiency. For high oxygen deficiency, the cuprates and the manganites are insulating. In that case, a transient photoconductivity is observed in the cuprates and manganites. Moreover, a photoinduced insulator- metal (I-M) transition appears in these insulating thin films.

Paper Details

Date Published: 6 September 2000
PDF: 7 pages
Proc. SPIE 4058, Superconducting and Related Oxides: Physics and Nanoengineering IV, (6 September 2000); doi: 10.1117/12.397850
Show Author Affiliations
Alain Gilabert, Univ. de Nice Sophia Antipolis (France)
R. Cauro, Univ. de Nice Sophia Antipolis (France)
Jean-Pierre Contour, Thomson-CSF (France)
M. G. Medici, Univ. de Nice Sophia Antipolis (France)
J. C. Grenet, Univ. de Nice Sophia Antipolis (France)
R. Papiernik, Univ. de Nice Sophia Antipolis (France)
Ivan K. Schuller, Univ. of California/San Diego (United States)


Published in SPIE Proceedings Vol. 4058:
Superconducting and Related Oxides: Physics and Nanoengineering IV
Davor Pavuna; Ivan Bozovic, Editor(s)

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